Napa Building Stone is a locally sourced basalt building stone prized throughout California for high-end residential, commercial, and hospitality projects. Its rugged texture, timeless earth-tone colors, and exceptional durability make it a signature material seen in custom estates, winery architecture, tasting rooms, boutique hotels, and luxury outdoor living spaces.
 
This stone is naturally split and hand-selected for structural and aesthetic applications. Builders, masons, and designers choose Napa Building Stone for its strength, versatility, and Old-World character. Each piece offers unique color variations—gray, charcoal, brown, tan, and weathered gold—creating a warm, organic look that blends seamlessly into Napa Valley architecture and landscapes across the North Bay.
 
Perfect for freestanding walls, retaining walls, columns, entry monuments, fireplaces, siding veneers, water features, raised planters, and more.
 
Common Uses & Applications
Napa Building Stone is one of the most versatile and premium hardscape stones used in California. Its dense basalt composition and natural split-face textures make it ideal for both structural and decorative builds. Contractors, masons, architects, and estate builders use this stone in applications such as:
 
Residential & Luxury Estate Construction
Exterior house siding (full-bed or veneer)
Facades, columns, pilasters & architectural accents
Entry monuments, gate pillars & mailbox columns
Outdoor kitchens, fireplaces & chimney surrounds
Interior statement walls & rustic lodge-style features
 
Landscape & Hardscape Builds
Dry-stack or mortared retaining walls
Freestanding garden walls
Raised planter beds
Borders & property markers
Tree wells and seating walls
 
Wineries, Hotels & Commercial Projects
Tasting room facades and landscape walls
High-traffic commercial entry walls
Outdoor courtyard seating areas
Hospitality-grade accents for resorts & restaurants
 
Water & Garden Features
Waterfall edging
Pond and fountain surrounds
Naturalistic rock gardens
This stone is widely chosen because it combines strength, longevity, and timeless Napa Valley character — making it perfect for both structural builds and refined, high-end landscape design.
 
Material Specs & Technical Notes
Stone Type
Basalt Building Stone (Napa Basalt)
Dense, durable, and naturally split for masonry applications.
 
Origin
Sourced from the Napa Valley region, known for high-quality basalt with excellent structural strength and visual character.
 
Color Range
Natural earth tones including:
Gray
Charcoal
Warm brown
Tan / Gold highlights
Occasional weathered patina
Each pallet contains natural variation for an authentic, hand-crafted look.
 
Texture
Split-face, hand-selected basalt
Semi-rough edges ideal for dry-stack or mortared walls
Naturally weather-resistant surface
 
Density & Weight
Approximately 130–150 lbs. per cubic foot
80-200 lbs. per stone (varies by split and stone size)
 
Stone Dimensions (Varies Naturally)
Face heights: 4″ – 18″
Depths (bed depth): 3″ – 12″
Lengths: 6″ – 20″+/-
Larger accent stones boulders available
 
Strength & Durability
Extremely durable; suitable for structural and load-bearing work
Long lifespan with minimal maintenance
Ideal for outdoor exposure in California climates
 
Installation Compatibility
Dry-stack
Mortared / grout-set walls
Full-bed applications
Veneer (with proper masonry backing)
Works with both modern and traditional building styles
 
Project Coverage Estimates
(Actual coverage varies based on mason technique & joint spacing.)
Dry-Stack / Full-Bed Walls: approx. 30–40 sq ft per ton
Mortared / Veneer Applications: approx. 30–50 sq ft per ton
Large Accent Stones / Boulders: varies significantly by piece size
 
Packaging, Order and Delivery:
Sold by the ton
Loaded in bulk only
 
Order Requirements (varies by delivery address)
Minimum Order: 3 tons
Maximum Per Truckload: 24 tons
 
 
Delivery Service Areas (Dump Truck)
We deliver to all major North Bay cities including: Napa, St Helena, Calistoga, Yountville, American Canyon, Sonoma, Glen Ellen, Santa Rosa, Petaluma, Novato, San Rafael, Mill Valley, Ross, Sausalito, Fairfield, Vacaville, Benicia and surrounding communities. Napa Stone could be delivered to other California cities by special order and 3rd party trucking.
 
 
Frequently Asked Questions – Napa Building Stone
Q1. What type of stone is Napa Building Stone?
Napa Building Stone is a natural basalt building stone sourced from the Napa Valley region. It is known for its strength, durability, and timeless winery-style appearance, making it ideal for high-end homes, commercial properties, and landscape walls.
 
Q2. What colors can I expect in this stone?
Napa Building Stone features natural earth-tone variations including:
Charcoal, gray, brown, tan, gold, and weathered accents.
Color ranges naturally from pallet to pallet, giving each project a unique, authentic finish.
 
Q3. What is the typical coverage per ton?
Coverage depends on the mason’s installation style, joint spacing, and stone size.
General guidelines:
Dry-Stack / Full-Bed Walls: ~20-40 sq ft per ton
Mortared Veneer: ~30–50 sq ft per ton
 
Q4. How is the stone delivered?
Delivery is done using our dump truck. Stone is dumped in an accessible, safe location. We do not hand-place or install stones during delivery.